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From: Marcel Apfelbaum <marcel@redhat.com>
To: Jan Kiszka <jan.kiszka@web.de>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	David Kiarie <davidkiarie4@gmail.com>
Cc: qemu-devel@nongnu.org, peterx@redhat.com, valentine.sinitsyn@gmail.com
Subject: Re: [Qemu-devel] [V11 3/4] hw/core: provision for overriding emulated IOMMU
Date: Tue, 24 May 2016 17:23:00 +0300	[thread overview]
Message-ID: <574463C4.5070905@redhat.com> (raw)
In-Reply-To: <574450C2.2060805@web.de>

On 05/24/2016 04:01 PM, Jan Kiszka wrote:
> On 2016-05-24 13:49, Michael S. Tsirkin wrote:
>> On Sun, May 22, 2016 at 01:21:53PM +0300, David Kiarie wrote:
>>> Added an enum, subject to review, to machine properties which
>>> it used to override iommu emulated from Intel to AMD.
>>>
>>> Signed-off-by: David Kiarie <davidkiarie4@gmail.com>
>>
>> Marcel's
>>   "enable iommu with -device"
>> seems like a better alternative.
>
> If that works for both IOMMUs, it would be preferred. But the last time
> I checked (granted: long ago), there were internal ordering issues
> preventing this.
>

It will work for both. The reason is we delay the bus_master_region creation
to machine_done.

Thanks,
Marcel

> Bonus of moving IOMMU machine options over: They are getting more and
> more, and many are now very IOMMU-specific (like the CM control for Intel).
>
> Jan
>
>

  reply	other threads:[~2016-05-24 14:23 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-22 10:21 [Qemu-devel] [V11 0/4] AMD IOMMU David Kiarie
2016-05-22 10:21 ` [Qemu-devel] [V11 1/4] hw/i386: Introduce " David Kiarie
2016-05-22 17:47   ` Jan Kiszka
2016-05-22 18:12   ` Jan Kiszka
2016-05-22 18:17     ` Jan Kiszka
2016-05-22 18:48   ` Alex Bennée
2016-05-24 12:35   ` Peter Xu
2016-05-24 13:11     ` David Kiarie
2016-06-07 20:36   ` Alex Williamson
2016-06-08  5:18     ` Jan Kiszka
2016-05-22 10:21 ` [Qemu-devel] [V11 2/4] hw/i386: ACPI IVRS table David Kiarie
2016-05-24  6:54   ` Peter Xu
2016-05-24  7:06     ` Valentine Sinitsyn
2016-06-18  8:18       ` David Kiarie
2016-06-18 12:32         ` Peter Xu
2016-06-18 12:34           ` Jan Kiszka
2016-06-20  3:36             ` Peter Xu
2016-05-22 10:21 ` [Qemu-devel] [V11 3/4] hw/core: provision for overriding emulated IOMMU David Kiarie
2016-05-24  6:51   ` Peter Xu
2016-05-24 11:49   ` Michael S. Tsirkin
2016-05-24 13:01     ` Jan Kiszka
2016-05-24 14:23       ` Marcel Apfelbaum [this message]
2016-05-22 10:21 ` [Qemu-devel] [V11 4/4] hw/pci-host: Emulate AMD IOMMU David Kiarie

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